How popular is Vita?

Vita is a very popular first name for women (#1715 out of 4276, Top 40%) and also a very popular last name for both adults and children (#16571 out of 150436, Top 11%). (2000 U.S. Census)

Vita reached its peak rank of #868 in the U.S. in the 1910s, but is not listed currently. (Top 2000 Names, 2015)

Which version is better?

with its variant forms and related girl names. Popular alternative forms of Vita are Toya, Vicki, Vicky(#1953 a year ago), Victoria(#20), Vida(#1286), Viki and Vikki. Other forms, like Viqui, are uncommon. These relations of Vita reached the peak of their popularity in 1993 (adoption of 1.12%) and are somewhat less popular today (adoption 0.62%, down 45%).